PTCT insider Mark Boulding sells 3,081 shares

Mark Boulding reported sales of company common stock.

Rhea-AI Filing Summary

Mark Boulding reported sales of company common stock. The filing lists 3,081 shares tied to restricted stock vesting dated 02/17/2026 and executed through Fidelity Brokerage Services LLC. The filing also itemizes prior dispositions in January 2026: 2,266 (01/05/2026), 1,739 (01/06/2026), 4,879 (01/07/2026), 4,033 (01/08/2026), and 2,314 (01/09/2026).

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did PTCT insider Mark Boulding report in Form 144?

Mark Boulding reported the sale of 3,081 shares tied to restricted stock vesting on 02/17/2026. The transaction was processed through Fidelity Brokerage Services LLC and the filing lists multiple earlier January 2026 dispositions with specific share counts.

How many PTCT shares were sold by Mark Boulding in January 2026?

The filing lists January 2026 dispositions of 2,266 (01/05), 1,739 (01/06), 4,879 (01/07), 4,033 (01/08), and 2,314 (01/09). Each row includes the sale date and share count as reported in the excerpt.

Through which broker were the PTCT shares to be sold executed?

The transaction tied to 3,081 shares shows execution through Fidelity Brokerage Services LLC at an address listed in Smithfield, RI. The excerpt associates that broker with the securities to be sold and the reported vesting date.

What was the reason given for the 3,081 PTCT shares sold on 02/17/2026?

The 3,081-share entry is labeled as Restricted Stock Vesting and categorized under Compensation, with the vesting date shown as 02/17/2026. The filing ties the sale to vested restricted stock rather than open-market trading.

Does the Form 144 excerpt show dollar values for the sales?

Yes. Each disposition line in the January and February entries includes a dollar figure next to the share count, for example $171,190.18 for 2,266 shares on 01/05/2026. The excerpt pairs shares and gross dollar amounts.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 02/18/2026 - 04:38 PM EST Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001578852
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	PTC THERAPEUTICS, INC.
SEC File Number	001-35969
Address of Issuer	500 WARREN CORPORATE CENTER DRIVE WARREN NEW JERSEY 07059
Phone	9082227000
Name of Person for Whose Account the Securities are To Be Sold	Boulding Mark Elliott
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	3081	213687.69	80288305	02/18/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/17/2026	Restricted Stock Vesting	Issuer			3081	02/17/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	01/05/2026	2266	171190.18
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	01/06/2026	1739	133811.88
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	01/07/2026	4879	377839.55
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	01/08/2026	4033	308761.28
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	01/09/2026	2314	180314.42
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	02/17/2026	2813	194906.02

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	02/18/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Tyler Johnson, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Mark Boulding
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)